Home / 3,998.75-5,518.28-2,230.47

Finding the Fourth Proportional to 3,998.75, 5,518.28 and 2,230.47

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Solution

The fourth proportional to 3,998.75, 5,518.28 and 2,230.47 is: 3,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.75 : 5,518.28 = 2,230.47 : x
  2. Step 2: Convert to fraction form
    3,998.75/5,518.28 = 2,230.47/x
  3. Step 3: Cross multiply
    3,998.75x = 5,518.28 × 2,230.47
  4. Step 4: Simplify right side
    3,998.75x = 12,308,363.57
  5. Step 5: Solve for x
    x = 12,308,363.57/3,998.75
  6. Step 6: Final answer
    x = 3,078.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.